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SubjectRe: [PATCH 0/6] Intel Secure Guard Extensions
> Replay Protected Memory Block.  It's a device that allows someone to
> write to it and confirm that the write happened and the old contents
> is no longer available. You could use it to implement an enclave that
> checks a password for your disk but only allows you to try a certain
> number of times.

rpmb is found in a load of hardware today notably MMC/SD cards. Android
phones often use it to store sensitive system data.

Alan

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